lttng-ctl: Implement the condition evaluation interface

Signed-off-by: Jérémie Galarneau <jeremie.galarneau@efficios.com>

diff --git a/include/Makefile.am b/include/Makefile.am
index 55f9ce25735fe06b92483b7a1e165db5adc0d93a..ab104e4ab222b3e297673bf155ec19ad3e167b27 100644 (file)
--- a/include/Makefile.am
+++ b/include/Makefile.am
@@ -87,5 +87,6 @@ noinst_HEADERS = \
        lttng/action/action-internal.h \
        lttng/action/notify-internal.h \
        lttng/condition/condition-internal.h \
-       lttng/condition/buffer-usage-internal.h
+       lttng/condition/buffer-usage-internal.h \
+       lttng/condition/evaluation-internal.h
 

diff --git a/include/lttng/condition/evaluation-internal.h b/include/lttng/condition/evaluation-internal.h
new file mode 100644 (file)
index 0000000..c17049f
--- /dev/null
+++ b/include/lttng/condition/evaluation-internal.h
@@ -0,0 +1,32 @@
+/*
+ * Copyright (C) 2017 - Jérémie Galarneau <jeremie.galarneau@efficios.com>
+ *
+ * This library is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU Lesser General Public License, version 2.1 only,
+ * as published by the Free Software Foundation.
+ *
+ * This library is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License
+ * for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this library; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef LTTNG_EVALUATION_INTERNAL_H
+#define LTTNG_EVALUATION_INTERNAL_H
+
+#include <lttng/condition/evaluation.h>
+#include <common/macros.h>
+#include <stdbool.h>
+
+typedef void (*evaluation_destroy_cb)(struct lttng_evaluation *evaluation);
+
+struct lttng_evaluation {
+       enum lttng_condition_type type;
+       evaluation_destroy_cb destroy;
+};
+
+#endif /* LTTNG_EVALUATION_INTERNAL_H */

diff --git a/src/lib/lttng-ctl/Makefile.am b/src/lib/lttng-ctl/Makefile.am
index e339fa207d03470b7ad028c66582f3fa98b20654..abcbfee36bc86e6589bda890d492a76d76dca925 100644 (file)
--- a/src/lib/lttng-ctl/Makefile.am
+++ b/src/lib/lttng-ctl/Makefile.am
@@ -6,7 +6,7 @@ lib_LTLIBRARIES = liblttng-ctl.la
 
 liblttng_ctl_la_SOURCES = lttng-ctl.c snapshot.c lttng-ctl-helper.h \
                lttng-ctl-health.c save.c load.c deprecated-symbols.c \
-               action.c notify.c condition.c buffer-usage.c
+               action.c notify.c condition.c buffer-usage.c evaluation.c
 
 liblttng_ctl_la_LDFLAGS = \
                $(LT_NO_UNDEFINED)

diff --git a/src/lib/lttng-ctl/evaluation.c b/src/lib/lttng-ctl/evaluation.c
new file mode 100644 (file)
index 0000000..41e59c1
--- /dev/null
+++ b/src/lib/lttng-ctl/evaluation.c
@@ -0,0 +1,37 @@
+/*
+ * Copyright (C) 2017 - Jérémie Galarneau <jeremie.galarneau@efficios.com>
+ *
+ * This library is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU Lesser General Public License, version 2.1 only,
+ * as published by the Free Software Foundation.
+ *
+ * This library is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License
+ * for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this library; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include <lttng/condition/evaluation-internal.h>
+#include <common/macros.h>
+#include <stdbool.h>
+#include <assert.h>
+
+enum lttng_condition_type lttng_evaluation_get_type(
+               struct lttng_evaluation *evaluation)
+{
+       return evaluation ? evaluation->type : LTTNG_CONDITION_TYPE_UNKNOWN;
+}
+
+void lttng_evaluation_destroy(struct lttng_evaluation *evaluation)
+{
+       if (!evaluation) {
+               return;
+       }
+
+       assert(evaluation->destroy);
+       evaluation->destroy(evaluation);
+}